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Epifauna vs. Infauna

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Jordi Viscarri

on 14 January 2014

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Transcript of Epifauna vs. Infauna

all of the animal life of a particular region or time.
Epifauna/ Infauna
There are two groups of benthic organisms, based on their habitat: epifauna and infauna. Epifauna live attached to a surface and infauna live within the Bay’s bottom sediments.
burrow into bottom sediments. Processes such as bioturbation, or sediment disturbance, is caused by infaunal burrowing and feeding, especially by deposit feeder species such as worms or certain species of clams.
Worms, clams and other infauna form their own communities that are connected to the water by tubes and tunnels.
As part of a complex food web, infaunal communities are composed of both predators and prey. Trophic level of these species may change during its lifecycle as the organism grows and its size, feeding mechanism, and nutritional requirements change during ontogeny.
live attached to hard surfaces such as rocks, shells and pilings. They also live directly on the surface of the Bay’s bottom.
Epifauna include oysters, sponges, sea squirts, sea stars and barnacles.

An oyster reef is an example of an epifaunal benthic community.
Epifauna vs. Infauna
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